DupliChecker
Image compression online tool operated by DupliChecker (duplichecker.com) (Completely free)
Product node overview & trust baseline
Operator provenance, privacy baseline and site-wide pricing belong directly to the product node and are inherited across linked task edgesDupliChecker, operated by DupliChecker (duplichecker.com; Multi-Tool Web Portal) under a "Completely free" model, scored 90/100 in our image compression benchmark. Overall finding: Upfront free limits and login-free batch downloads accompany roughly halved PNG size; each image is capped at 5MB amid many ads and tool links.
Multi-Tool Web Portal · 2006–Present (20-year utility portal)
Provenance baseline: 16.5/20 · Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006.
The Image Compressor page explicitly states "100% Free" and supports up to 10 images per batch at max 5 MB each (JPG/JPEG/PNG) without login. Site-wide Pricing links cover Plagiarism, Paraphrasing, and Reverse Image Search quotas; image compression requires no subscription.
Pricing transparency baseline: 31/35 · Cancellation: The Image Compressor tool is free to use and involves no subscription charges.
Temporary AWS S3 links expire and are purged automatically
No third-party services listed in this record; this is not proof that none exist.
Product-level pricing & rules baseline
Verified plans, billing periods and cancellation terms owned by this product node; task-specific credit costs and free export limits are detailed per capability edge belowDupliChecker online Image Compressor tool (excludes separate Plagiarism, Paraphrasing, and Reverse Image Search plans) · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The Image Compressor page explicitly states "100% Free" and supports up to 10 images per batch at max 5 MB each (JPG/JPEG/PNG) without login. Site-wide Pricing links cover Plagiarism, Paraphrasing, and Reverse Image Search quotas; image compression requires no subscription.
Cancellation, sources & verification record
The Image Compressor tool is free to use and involves no subscription charges.
DupliChecker official online Image Compressor page ↗ · 2026-10-21 Capture 1 ↗
Archived official pricing sources: DupliChecker official online Image Compressor page (2026-10-21) [text snapshot ↗]
Capability map & linked task edges
Whenever a capability passes fixed-fixture testing, an edge is automatically linked between this product node and the task topic for horizontal comparison.
| Linked task edge | Score | Assessment · historical test | Test scope & delivery | Inspect capability / follow edge |
|---|---|---|---|---|
| Image compression | 90/100 | Upfront free limits and login-free batch downloads accompany roughly halved PNG size; each image is capped at 5MB amid many ads and tool links. | 2048 × 2048 · PNG Historical test · 2026-10-19 Guest flow · Fixed PNG fixture · Output attached |
Tested task edges (with scores and native artifacts) are strictly separated from discovered untested capabilities (unscored).
Peer product comparison across shared task edges
Matched by overlapping tested task edges; compare site-wide billing models alongside per-task benchmark scoresThe official pricing page and credit table state that guests get 5 free runs and registered Free accounts receive 10 one-time Nero Credits (Standard/Photo/Anime 2× costs 1 credit/image, 4× costs 2 credits/image, paid-only 8× costs 4 credits/image). Standard monthly is USD 21.95/month promotional (regular USD 24.99/month, 300 credits/month). The yearly promo banner displays only "7.66 USD per month" (3,000 credits/year) without printing the annual invoice total before login, so the annual total is marked unverified.
- Image compression：DupliChecker 90/100 vs Nero AI 88/100
Actual annual charges $59.99/$263.99. A 3-day trial is offered; cancel before expiry to avoid charges. Exact daily free count is unspecified. The 11,500-credit pack includes a current 1,500-credit bonus.
- Image compression：DupliChecker 90/100 vs PicWish 73/100
Actual annual amounts are $77/$278/$854. Absolute removal quotas and per-image credit usage are unpublished; 1×/5×/20× cannot be converted into image counts.
- Image compression：DupliChecker 90/100 vs Img2Go 80/100
Monthly and annual modes confirm annual bills USD 72 / 180. Current PDF Unlimited and all-tool TinyWow Unlimited replace the historical Supporter description. Other single-category subscriptions do not include PDF. Numeric free limits and cancellation terms remain unspecified.
- Image compression：DupliChecker 90/100 vs TinyWow 82/100
Linked capability test: Image compression
2026-10-19 · Native output attached. Findings cover the recorded fixture and conditions; paid specifications may be untested.
Task quality
File reduction 53.34% · Output size 1930.7 KB
Detailed facts & historical record
- Measured fixture results
File reduction: 53.34% · Output size: 1930.7 KB
- Fixture findings
Reduced this fixture by about 53% without login or a watermark; the page contains many surrounding links.
- Original historical observation
While DupliChecker's page has many SEO cross-links, its core compression pipeline is solid: shrinking our 4.14 MB anchor PNG by 53.34% to 1.89 MB at PSNR=39.54 dB and SSIM=0.9985 with no login required (02_workspace.png, 03_download.png).
- Suitable uses · historical assessment
Users who want quick no-login compression for PNG/JPEG files under 5 MB with manual quality slider control
- Result & output evidence
Delivery capabilities
2048 × 2048 · PNG · No watermark in test
Detailed facts & historical record
- Recorded export specifications
2048 × 2048 · PNG · No watermark in test
- Historical specification note · not an official maximum
2048×2048 (native resolution watermark-free PNG direct export)
- Watermark observation
Watermark-free
- Batch & API
Supports 10-image batch upload and one-click Download All
- Recorded free-tier dimensions
2048 × 2048
- Attached file dimensions
2048 × 2048 · PNG
Speed & reliability
About 7.6s end to end in this run; reliability not retested
Detailed facts & historical record
- Timing observation
Network-observed server wait: 5.4s · End-to-end reference: 7.6s
- Date & fixture
2026-10-19 · anchor_compress_v1 · US-West (California, AS2914)
- Repeated tests & reliability
No standardized repetition count, success rate or variability range is recorded.
Interaction experience
No login in this run
Detailed facts & historical record
- Account requirements
No login in this test
- Sign-in methods
No login required
- Manual adjustment
Not verified
- Interaction observations
Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots.
Background & reputation
DupliChecker (duplichecker.com) · Long-term reputation not independently verified
Detailed facts & historical record
- Service lifecycle notice
Not verified
- Operator
DupliChecker (duplichecker.com)
- Recorded origin
Multi-Tool Web Portal
- Domain history record
2006–Present (20-year utility portal)
- Background & reputation assessment
Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006.
- External reputation record
Not verified
Engineering & privacy
Uploaded for cloud processing；Explicit retention period unconfirmed; inspect policy record
Detailed facts & historical record
- Processing location
Uploaded for cloud processing
- Third-party tracking record
Not verified
- Engineering & privacy assessment
Delivers compressed outputs via temporary AWS S3 buckets (temp-ca.s3.amazonaws.com) and states that temporary files are automatically purged.
- Retention statement
Explicit retention period unconfirmed; inspect policy record
Task free allowance & pricing disclosure
Free guests can upload up to 10 images per batch, max 5 MB per image
'Upload Up to 10 images, max 5MB each' is printed directly inside the upload box
Site-wide plans belong to the product node (see Product-level pricing baseline ↑).
Expand site-wide plans aligned for Image compression (1 records)
DupliChecker online Image Compressor tool (excludes separate Plagiarism, Paraphrasing, and Reverse Image Search plans) · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The Image Compressor page explicitly states "100% Free" and supports up to 10 images per batch at max 5 MB each (JPG/JPEG/PNG) without login. Site-wide Pricing links cover Plagiarism, Paraphrasing, and Reverse Image Search quotas; image compression requires no subscription.
Cancellation, sources & verification record
The Image Compressor tool is free to use and involves no subscription charges.
DupliChecker official online Image Compressor page ↗ · 2026-10-21 Capture 1 ↗
Evaluation basis & full scores · Overall 89.8/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_compress_v1
Honesty & reputation · 84.5/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 31 / 35 | Clearly states free tier limits inside the dropzone ('Upload Up to 10 images, max 5MB each.', 01_landing.png); uploading our 4.14 MB anchor PNG and clicking Compress Image immediately reveals a free 'Save -53% (1.89 MB)' download button with zero paywalls (02_workspace.png, 03_download.png). | Evidence A → |
| Interaction restraint | 24.5 / 30 | Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots. | Evidence A → |
| Background & reputation | 16.5 / 20 | Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006. | Evidence A → |
| Engineering & privacy | 12.5 / 15 | Delivers compressed outputs via temporary AWS S3 buckets (temp-ca.s3.amazonaws.com) and states that temporary files are automatically purged. | Evidence A → |
Capability · 92/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 60.2 / 65 | Preserves native 2048×2048 PNG format while reducing 4,137.9 KB to 1,930.7 KB (53.34% reduction, 2.14× ratio) with PSNR = 39.54 dB and SSIM = 0.9985 (60.2/65) | Evidence A → |
| Deliverable specifications | 20 / 20 | 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | Evidence A → |
| Processing speed | 11.8 / 15 | Cloud upload and AWS S3 compressed delivery complete in ~7.6s (~5.4s server processing) (11.8/15) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Developer & citation kit · Claim updates, request benchmarks & embed verified badges
Product developers and writers can embed these SVG badges in official websites, GitHub READMEs or documentation, or use the channels below to sync product-wide plans and capabilities.
[](https://realtest.org/tools/duplichecker.com/) <a href="https://realtest.org/tools/duplichecker.com/"><img src="https://realtest.org/badges/duplichecker.com.svg" alt="DupliChecker — RealTest" height="24" /></a> 
[](https://realtest.org/tools/duplichecker.com/#feature-image-compressor)